var numarr = [8, 32, 128]
var formatted = []
//create three numbers of different lengths
numarr.forEach(num => {
formatted.push(
num.toLocaleString('en-US', {//this is the function that formats the numbers
minimumIntegerDigits: 2, //change this to your minimum length
useGrouping: false
})
)
})
//after running this, formatted == [08, 32, 128]